296 citations · 4.9k across the 120 of their papers we have counts for
118 papers
New candidate hypervelocity red clump stars in the inner Galactic bulge
A. Luna, T. Marchetti, M. Rejkuba +5
We search for high-velocity stars in the inner region of the Galactic bulge using a selected sample of red clump stars. Some of those stars might be considered hypervelocity stars…
A catalogue of Galactic GEMS: Globular cluster Extra-tidal Mock Stars
Steffani M. Grondin, Jeremy J. Webb, James M. M. Lane +2
This work presents the Globular cluster Extra-tidal Mock Star (GEMS) catalogue of extra-tidal stars and binaries created via three-body dynamical encounters in globular cluster cor…
In-plane Tidal Disruption of Stars in Disks of Active Galactic Nuclei
Taeho Ryu, Barry McKernan, Saavik Ford +4
Stars embedded in active galactic nucleus (AGN) disks or captured by them may scatter onto the supermassive black hole (SMBH), leading to a tidal disruption event (TDE). Using the…
The dominant mechanism(s) for populating the outskirts of star clusters with neutron star binaries
Nathan W. C. Leigh, Claire S. Ye, Steffani M. Grondin +3
It has been argued that heavy binaries composed of neutron stars (NSs) and millisecond pulsars (MSPs) can end up in the outskirts of star clusters via an interaction with a massive…
The chaotic four-body problem in Newtonian gravity -- II. An ansatz-based approach to analytic solutions
Carlos M. Barrera Retamal, Nathan W. C. Leigh, Nicholas C. Stone
In this paper, we continue our analysis of the chaotic four-body problem by presenting a general ansatz-based analytic treatment using statistical mechanics, where each outcome of…
Globular Cluster UVIT legacy Survey (GlobUleS) III. Omega Centauri in Far-Ultraviolet
Deepthi S. Prabhu, Annapurni Subramaniam, Snehalata Sahu +21
We present the first comprehensive study of the most massive globular cluster Omega Centauri in the far-ultraviolet (FUV) extending from the center to ~ 28% of the tidal radius usi…
Searching for young runaways across the sky
Marina Kounkel, Aidan McBride, Keivan G. Stassun +1
We present a catalog of 3354 candidate young stars within 500 pc that appear to have been ejected from their parent associations with relative speeds of >5 km/s. These candidates h…
Searching for the extra-tidal stars of globular clusters using high-dimensional analysis and a core particle spray code
Steffani M. Grondin, Jeremy J. Webb, Nathan W. C. Leigh +2
Three-body interactions can eject stars from the core of a globular cluster, causing them to enter the Galactic halo as extra-tidal stars. While finding extra-tidal stars is impera…
Aligning Retrograde Nuclear Cluster Orbits with an Active Galactic Nucleus Accretion Disc
Syeda S. Nasim, Gaia Fabj, Freddy Caban +6
Stars and stellar remnants orbiting a supermassive black hole (SMBH) can interact with an active galactic nucleus (AGN) disc. Over time, prograde orbiters (inclination $i<90^{\circ…
The thermodynamics of stellar multiplicity: dynamical evolution of binary star populations in dense stellar environments
N. W. C. Leigh, N. C. Stone, J. J. Webb +1
We recently derived, using the density-of-states approximation, analytic distribution functions for the outcomes of direct single-binary scatterings (Stone & Leigh 2019). Using the…
Globular Clusters UVIT Legacy Survey (GlobULeS) I. FUV-optical Color-Magnitude Diagrams for Eight Globular Clusters
Snehalata Sahu, Annapurni Subramaniam, Gaurav Singh +22
We present the first results of eight Globular Clusters (GCs) from the AstroSat/UVIT Legacy Survey program GlobULeS based on the observations carried out in two FUV filters (F148W…
Stellar Triples as a Source for Ba Stars
Yan Gao, Silvia Toonen, Nathan Leigh
Barium stars have been studied extensively over the past few decades, yet our current understanding of how these intriguing objects formed leaves much to be desired. Many trends ob…
Tidal Disruption Events by Compact Supermassive Black Hole Binaries
Taeho Ryu, Alessandro A. Trani, Nathan W. C. Leigh
Stars can be tidally destroyed or swallowed by supermassive black hole binaries. Using a large number of accurate few-body simulations, we investigate the enhancement and suppressi…
The mean free path approximation and stellar collisions in star clusters: Numerical exploration of the analytic rates and the role of perturbations on binary star mergers
Bastián Reinoso, Nathan W. C. Leigh, Carlos M. Barrera-Retamal +3
In this paper we compute predictions for the number of stellar collisions derived from analytic models based on the mean free path (MFP) approximation and compare them to the resul…
Starfall: A heavy rain of stars in 'turning on' AGN
B. McKernan, K. E. S. Ford, M. Cantiello +5
As active galactic nuclei (AGN) `turn on', some stars end up embedded in accretion disks around supermassive black holes (SMBHs) on retrograde orbits. Such stars experience strong…
Symmetry Breaking in Dynamical Encounters in the Disks of Active Galactic Nuclei
Yihan Wang, Barry McKernan, Saavik Ford +3
Active galactic nucleus (AGN) disks may be important sites of binary black hole (BBH) mergers. Here we show via numerical experiments with the high-accuracy, high precision code {\…
Hot Jupiter formation in dense clusters: secular chaos in multi-planetary systems
Yihan Wang, Rosalba Perna, Nathan W. C. Leigh +1
Exoplanetary observations reveal that the occurrence rate of hot Jupiters is correlated with star clustering. In star clusters, interactions between planetary systems and close fly…
Chaos in the vicinity of a singularity in the Three-Body Problem: The equilateral triangle experiment in the zero angular momentum limit
Hugo D. Parischewsky, Alessandro A. Trani, Nathan W. C. Leigh
We present numerical simulations of the gravitational three-body problem, in which three particles lie at rest close to the vertices of an equilateral triangle. In the unperturbed…
SpaceHub: A high-performance gravity integration toolkit for few-body problems in astrophysics
Yi-Han Wang, Nathan Leigh, Bin Liu +1
We present the open source few-body gravity integration toolkit {\tt SpaceHub}. {\tt SpaceHub} offers a variety of algorithmic methods, including the unique algorithms AR-Radau, AR…
Stellar collisions in flattened and rotating Pop. III star clusters
M. Z. C. Vergara, D. R. G. Schleicher, T. C. N. Boekholt +4
Fragmentation often occurs in disk-like structures, both in the early Universe and in the context of present-day star formation. Supermassive black holes (SMBHs) are astrophysical…
Spin misalignment of black hole binaries from young star clusters: implications for the origin of gravitational waves events
Alessandro Alberto Trani, Ataru Tanikawa, Michiko S. Fujii +2
Recent studies indicate that the progenitors of merging black hole (BH) binaries from young star clusters can undergo a common envelope phase just like isolated binaries. If the st…
Testing the Flux-based statistical prediction of the Three-Body Problem
Viraj Manwadkar, Barak Kol, Alessandro A. Trani +1
We present an extensive comparison between the statistical properties of non-hierarchical three-body systems and the corresponding three-body theoretical predictions. We perform an…
Formation of supermassive black hole seeds in nuclear star clusters via gas accretion and runaway collisions
Arpan Das, Dominik R. G. Schleicher, Nathan W. C. Leigh +1
More than two hundred supermassive black holes (SMBHs) of masses have been discovered at . One promising pathway for the formation o…
A phylogenetic analysis of galaxies in the Coma Cluster and the field: a new approach to galaxy evolution
M. Martínez-Marín, R. Demarco, G. Cabrera-Vives +3
We propose a phylogenetic approach (PA) as a novel and robust tool to detect galaxy populations (GPs) based on their chemical composition. The branches of the tree are interpreted…